Greatest Common Factor of 66, 37, 28, 20

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 66, 37, 28, 20 by common division method
• Greatest Common Factor of 66, 37, 28, 20 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 37

List of positive integer factors of 37 that divides 37 without a remainder.

1,37

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Greatest Common Factor

We found the factors 66,37,28,20 . The biggest common factor number is the GCF number.
So the greatest common factor 66,37,28,20 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 14, 25, 68, 64
• GCF of 39, 14, 64, 71
• GCF of 13, 31, 97, 41
• GCF of 60, 48, 57, 29
• GCF of 41, 68, 78, 87

1. What is the GCF of 66, 37, 28, 20?

Answer: GCF of 66, 37, 28, 20 is 1.

2. How to Find the GCF of 66, 37, 28, 20

Answer: Greatest Common Factor(GCF) of 66, 37, 28, 20 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(66, 37, 28, 20) = 1.